Version information

• Plugin version : 1.1.4
• PHP : 7.2.10
• WordPress :
• ACF version : 5.7.7
• Polylang version : 2.4

Steps to reproduce

1. Add acf field in term
2. do get_field('NAME_OF_FIELD'), WP_Term Term) on page.

What was expected

No error

What happened instead

( ! ) Catchable fatal error: Object of class WP_Term could not be converted to string in /var/www/html/web/wp-content/plugins/acf-options-for-polylang/classes/helpers.php on line 16

My opinion

1. The problem come to
   add_filter( 'acf/validate_post_id', [ $this, 'set_options_id_lang' ], 10, 2 );

Filter is deprecated and dont work with acf term field.